Cab-supporting structure



Dec. 27, 1927.

G. M. EATON CAB SUPPORTING STRUCTURE Filed Dec. 29, 1923 TllllllllllkATTORN EY Patented Dec. 27, 13.27.

UNITED ,STATES PATENT OFFICE.

GEORG-E IVI. EATON, OF PITTSBURGH, PENNSYLVANIA, ASSIGNOR TOWESTINGHOUSE ELECTRIC & MANUFACTURI'NG COMPANY, A CORPORATION 0FPENNSYLVANIA.

CAB-SUPPORTING- STRUCTURE.

Application led December 29, 1923.

My invention relates to railway vehicle structures, more particularly tothe supporting of the cab member on its trucks.

It is among the objects of my invention to provide anti-friction slidingsupports which shall eliminate the excessive wear that occurred in priorart structures, resulting from the relatively heavy cab structures beingmovably supported on the truck members.

Further objects of my invention are to provide anti-friction slidingsupports 'for railway vehicle bodies which shall b e of simple, compactand durable mechanical construction, which shall be adapted to maintainand provide a continuous film of lubricant on the engaging portionsthereof and which shall be applicable to any standard railway vehicle.

The difculty of maintaining adequate lubrication on the wearing platesor pads of railway vehicles has been a problem of great concern and longstanding and has led to the use of various types of yielding andflexible mechanical devices, particularly center pin structures, whichin some degree obviate these difficulties.

My present invention is directed to an anti-friction support that isprovided with an inherent lubricating system for maintaining an oil filmon the engaging faces ofthe wearing pads or plates at all times.

In the accompanying drawing constituting a part hereof and inwhich likereference characters designate like parts:

AFigure 1 is a view partially in section and partially in elevation of arailway vehicleembodying the principles of my invention,

Fig. 2 is a view partially in section and partially in elevation of thesupporting antifriction member, and

Fig. 3 is a cross-sectional view thereof taken along tbe line IIT-III ofFig. 2.

Referring to Fig. 1, the structure herein illustrated comprises afamiliar truck frame construction including a pair of side frames 1 thatmay be journalled on wheel axles 2 in the usual manner, as by means ofjournal boxes and side-frame pedestal construction (not shown). Atransom member 3 is earried by the side frame 1, and a cab support i issecured centrally of the transom 3 to carry the cab or vehicle subframe5.

The cab support 4, Figs. 2 and 3, comprises a base member or pillar 6having a radiai iia'nge il that is provided with open Serial No.683,368.

ings '8 adapted to receive bolts 9, Fig. 1, by which the base is securedto the transom 3. The base 6 has a substantially cup-shape or recessedupper portion 10, the base of which is provided with integral trunnionseats 11, Fig. 3, which. are adapted .to receive the trunnions of arocking disc or teeter plate 12. The teeter plate, as shown in Fig. 2,has a relatively thick central section and is reduced in size along theaxis at right angles to the axis of the trunnions, for the purpose ofproviding angular or rocking movements of the plate about its `trunnionaxis.

The co-operating complementary or upper portion of the supportLlcomprises a pedestal 15 that is secured to the cab frame 5 by aflange-and-bolt construction similar to that described in connectionwith the base 6. The pedestal 15 is provided with a radial flange 16near its central body portion having a vertically depending ring orannular projection 17, which is adapted to seat in a groove 18 that isprovided in the top rim of the base 6. The lower portion of the pedestal15 extends within the cup-shape base portion 10 and is provided with an'inverted recess 19 for securing a wearing plate or pad 2O that engagesthe teeter plate 12. The base 6 is also provided kwith a similar plateor bearing pad 20a, which is located in a recess near the bottom of thecup-shape base portion 10.

The cup portion 10 of the base 6 constitutes an oil chamber or reservoirin which suitable lubricant is maintained at a level suiicient to coverthe teeter plate and the co-opei'ating bearing surfaces of the pads 20and 20a. The lubricant thus flows' into the wedge-shaped crcvices 2l.formed in accordance with relative position of the teeter plate and thewearing pads. as determined by the motion of the cab member.

Under normal operating conditions of railway vehicle-s, a continuousswaying motion. of the cab relative to the supporting trucks or railsoccurs and, since the centerline of the trunnions is substantiallyparallel to the rails. the teeter plate is correspondingly rocked on itstrunnions to alternately effect engagement of and expose its wearingfaces. For every engagement of the bearing faces of the teeter platewith the wearing pads 12 of the support, ,a newly lubricated surface isproviderl which Agreatly yreduces friction and results nite. minimumWear of the co-operating bearing members.

Sliding of cab support plate occurs when the vehicle enters and leavescurves. Vith the trunnion centerline pointing toward the cab centerpin,`entry into curvesv will teeter the plate and leaving` curves Will againteeter the plate.

It is evident from the above description of my invention that cabsupportsinade in accordance therewith Will provide an efficient anddurable structure for adequately lubricating the several co-operatingparts as an automatic function of its mechanical construction, thusmaking the lubrication of the Wearing surfaces inherent in the structureand independent of extrinsic means such as Wereccmifnonly utilized inprior devices."

Although l have Vdescribed ai specific embodiment of my invention, itWill "be obvious to those skilled Ain lthe art `that variousvmodifications maybe 'made in the details of con struction, thedesignanfd the proportion of the several (io-operating parte, Withoutdeparting from the'principles herein set'forth.

` I claim as my invention:

l. An anti-friction support comprising' a base having a recessedportion, a teet-,er plate having integral trunnions seatedvin said base,a cooperating pedestal Supported on said teeter plate, said plate havingbevelled faces, and a plurality of pads provided in said base and saidpedestal `for engaging said faces.

v2. 'An anti-friction support comprising a base having al substant'iallycup-shaperecessed portion for carrying oil, ateeter pla-te seated insaid cup portion and aco-operatingfr pedestal support seated on saidplate, said plate having beveled faces adapted to engage the seatingportions of said "base and pedestal.

In 'testimony whereof, I have hereunto subscribed my name this 22nd. dayof 'December, 1928. i I

esoneri M. nieren

